End fitting for high pressure hose



M. HATTAN 2,328,013

END FITTING FOR HIGH PRE-SSURE HOSEl Aug. 31, 1943.

Filed Dec. 8, 1941 59.1 l 24S; I ff 179.5

" body of the improved Patented Aug. 31, 1943 .Y OFFICE l END FITTINGFOR HIGH PRSSURE HOSE Mark Rattan, Dayton, Ohio Application December 8,1941, Serial No. 422,095

3 Claims.

(Granted under .uieact of Maren .3,

1883, kas

\ amended April so, 192s; 37o 0.o. 757) a iitting of this kind whichwill have greater capacity for gripping the hose ends in order thatleakage and blowouts may be minimized.

4Another-obiectjis to provide an end iittlng of character whichV may bereadily removed l flfomworn hose and used again on new.- Y Anotherobject is to provide, in a fitting of this`klnd, gripping means ofunusual force be'- `twem the fitting and the hose, in'order that thegripping surfaces on the iltting need not be corregated or knurled andthe hose may have a smooth exterior without'the necessity of a fabriccover molded to the outside, to the end that the hose surfaces contactedbythe iitting will not be chafed or torn should the tting inadvertentlybe insuiilciently tightened and a blowout, for that reason, occur.

Other objects will become apparent as the invention is more specificallydescribed and asreference is made to the drawing, wherein:

Fig. 1 is a side view, partly in section, of the fitting.

Flg. 2 shows the clamping sleeve after it has been divided by axiallyextending cuts into three segmental parts.

Fig. 3 is a side view of the tion being shown in;section.

Fig. 4 isa sectional assembly view oi.' the parts shownin detail inFigs. 1, 2,and 3, the view being taken on the line 4-4 of Fig. 5.

Fig. 5 is a transverse sectional view -taken on the line 5 5 of Fig. 4.

Fig. 6 is a transverse sectional view through the body on the line 8-8of Fig. 1.

Like numerals refer to like parts throughout the views.

The body I 0 o! the device, shown in detail in I Fig. 1, comprises atubular portion I2 which nts' closeLv into the interior o! the hose I4.An openlng I5 extendssxiallythrgugh thebodyIlI.

A ange IB-is preferably made integral with' the body and provided with aplurality of'radial guide notches Il, there belngthreeoftheae clampingnut, a p0rnotches in the present embodiment. The sides of the guidenotches I8 are parallel, as best shown in Fig. 6.

Axially spaced apart from the ange I 6 is a polygonal portion 2|), alsointegral with the body I0 and hexagonal in the presentfembodiment.Portion 2U is provided as a 'holding means for holding the body I0non-rotative by'nieans oi a wrench or similar tool when the hosleand thetting are being assembled'. l l

The threaded portion 22 ofthe body III is preferably' integral therewithand may be externally threaded as shoWn,-or internallythreaded if sorequired, the threads belngof a pitch and the diameter a size to fit thethreads of the part with. which it willbe used.

A sleeve 24 has a bore 26 which ts closely over the outside of the hose,whilethe external diameter is tapered, increasing in', diameter from theright end to. the left. The tapered outside of the sleeve is threaded asvat 28 to receive the clamp nut 43l) which 'is internally threaded at 32to fit' the taper-threaded outside of thesleeve. The exterior of theclamp nut 30 is provided with a polygonal portion 34 to which a wrenchmay bel applied in tightening the nut.

The sleeve 24 is divided by one or more axially extending cuts 36, Fig.5, three cuts being employed in the present embodiment. The purpose ofsodividing the sleeve is that the sleeve may be drawn to a smallerdiameter as the nut 30 advances from right to left over the taperedVthreads 28.

I'he number of the longitudinal cuts 36 which are made' .through thesleeve 24. determines, of'

course, the number of separate parts 25 into which'the sleeve isdivided, and this 'governs the number of radial guide notches I 8 whichshould be put in the flange I 6. Since, in the present embodiment, thenotches I8 are three in number, the

sleeve v24 is divided into three segments.

After theV sleeve.24 is divided into three -segments, as shown in Fig.2, the segments -are pro--A vided at the thicker or left-hand ends with;

radial guide pieces 38 .whichhave parallel sides' and lit slidablyintovthe radial guide vnotches Il.

whereby the guiding means 'i -and 38 actas a key and keyway connectionfor preventing. rela? tive rotation between the body IB and sleeve 24.V

.The parallel-sided guldepieces 38 are-provided by cutting lateralgrooves MintoA the segments.

the mves being wide enough to tit slidably over the thickness or the:flange I6, and the depthof' tbe. grooves being' lo governed altoleavejust the right amount of stock for the guide piecesf' at the bottoms ofa pair of grooves 40.

'Ilo assemble the improved end iltting with a hose, the tubular portionI2 of the body I0 is The outside diameter of the flange |6-shouldpreferably be no greater than the inside diameter of the nut 30 in orderthat, when necessary to provide the desired grip, the nut may be drawnnon-rotatably fastened to said body intermediate said holding portionand said tubular portion, said ange having circumferentially4 spacedslots extending axially therethrough equal iii-'number to the number ofsegments, andv guiding means on each segment, each segment-guiding meansconsisting of a guide piece slidable toward and `away from said bodyinone of said slots and a' portion slotted to iit slidably over saidflange.

2. For use'onra high pressure hose, an end fitting comprising a clampingsleeve having a.

substantially straight inner bore substantially equal vtothe outsideof'the hose and having a taper-threaded outer diameter, an internallytaper-threaded nut on the outside of said sleeve,

Y said sleeve being dividd by longitudinal spaces into segments, a bodyhaving a coupling connecup until'its forward end has passed over theiiange. Observance oiD this matter will provide the maximum range ofadjustment.

In the single exemplification of the invention,

shown, the parts I2, I6, 20 and 22 are integral, but obviously they maybe made separately and brazed, welded, or otherwise secured together.Parts 20 and 34 are shown as being polygonal, but they may be round andprovided with'spanrier vwrench slots within the spirit of the invention,

and while theslots I8 and guide pieces 38 :are indicated as radial, anyshape which will guide the segments 25 for radial movement is consideredwithin the scope of the claims, animportant -feature being thattheguides I8-38 alsoprevent,

relative rotation in the assembled device, between the body Iand thesegmental sleeve 24.`

Having described the invention, I claim: l. For use on,a high pressurehose, an end tting comprising a clamping sleeve having a substantiallystraight inner bore substantially `equal to the outside diameter of thehose and having a taper-threaded outer diameter, an internallytaper-threaded nut on the outside of tion at one end, a holding-portionfor a wrench fast on said body axially adjacent said coupling`connection, a tubular portion 'dimensioned to iit closely into theinside of Ysaid hose, and circumferentiallyspaced guide means equal tothe number of segments' fast on said body extending outwardly from thebody-between said tubular portion and said holding portion, and guidepieces Aonvsaid segments slidable between said circumferentially spacedguide means toward and away from said body.

y3. For use on a high pressure hose, an end tting comprising a clampingsleeve having a `straight inner bore substantially equal to the outsideof the hose and having a taper-threaded outer diameter, an-internallytaper-threaded nut on Vthe outside of said sleeve, said sleeve beingdivided by longitudinal spaces into segments, a

body having a coupling connection at one end,

a holding pdrqtion fast on said body axially adjal cent said couplingconnection, a 4tubular portion dimensioned to t closely into theinsideof said hose, and circumferentially spaced outwardly extendingguiding means equal to the number of said sleeve, said sleeve beingdivided by' longitu-f l dinal spaces into segments, a body having acoupling connection at one end, a holding portion fast on said bodyaxially adjacent said coupling connection, a tubular portion dimensionedto iit closely into the inside of said hose, and a flange ing portion,and segment guiding means, onel segments non-rotatably carried by saidbody intermediate said tubular portion and said holdcarried by eachsegment slidably engaging said first said guiding means lfor movement ofthe segments toward and away from said body.

MARK HAI'IAN.

